Carbon compounds global environmental change

The global warming is probably one of the most important environmental issues for this century. Every day there is new evidence of the climate change, but perhaps all this evidence is still not totally verified. However it is evident that the problem is real and the electrochemical reduction of carbon dioxide is one of the ways to solve the problem. In this chapter we discuss three families of compounds that catalyze the reduction of carbon dioxide. The general property of these macrocyclic complexes is that they reduce the overpotential required for this reaction to a more positive potential than metallic cathodes. 

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